Cuprous oxide (Cu₂O) is a p-type semiconductor compound combining copper and oxygen in a direct bandgap structure. It has been historically used in rectifier applications and early photoelectric devices, and is now of significant research interest for photovoltaic energy conversion, particularly in thin-film solar cells and photoelectrochemical water splitting. Engineers consider Cu₂O for optoelectronic applications where its low toxicity, earth-abundant constituent elements, and optical properties offer advantages over cadmium telluride or lead halide alternatives, though device stability and efficiency remain active development areas.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 16,236.5 | ksi | — | ||
| ↳ | 16,181.5 | ksi | — | ||
| ↳ | 16,704 | ksi | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.07600 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | ksi | — | ||
Poisson's Ratio(ν)2 entries | 0.4650 | - | — | ||
| ↳ | 0.4600 | - | — | ||
Shear Modulus(G)3 entries | 1,160.2 | ksi | — | ||
| ↳ | 1,211.4 | ksi | — | ||
| ↳ | 1,232.8 | ksi | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.2163 | lb/in³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)3 entries | 2.590 | eV | — | ||
| ↳ | 2.580 | eV | — | ||
| ↳ | 0.6440 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr) | 9.194 | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | — | ||
Seebeck Coefficient(S) | -189.9 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -0.5898 | eV/atom | — | ||
| ↳ | -0.5240 | eV/atom | — |